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## Summary Part of #15383. As per the spec (https://typing.python.org/en/latest/spec/overload.html#invalid-overload-definitions): For `@staticmethod` and `@classmethod`: > If one overload signature is decorated with `@staticmethod` or `@classmethod`, all overload signatures must be similarly decorated. The implementation, if present, must also have a consistent decorator. Type checkers should report an error if these conditions are not met. For `@final` and `@override`: > If a `@final` or `@override` decorator is supplied for a function with overloads, the decorator should be applied only to the overload implementation if it is present. If an overload implementation isn’t present (for example, in a stub file), the `@final` or `@override` decorator should be applied only to the first overload. Type checkers should enforce these rules and generate an error when they are violated. If a `@final` or `@override` decorator follows these rules, a type checker should treat the decorator as if it is present on all overloads. ## Test Plan Update existing tests; add snapshots.